{
  "manageEntity": {
    "action": "Update",
    "entityId": "194963084",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xbf628b97dadd3e3717d78b61b2ce229cde9ffa72fcdcce7f46137aa6fbf0afee",
    "signature": "0xc38efcb27cf6b45171ed29742a4faa36a887f89861348a0537d29ff8f62f3d8e7a12107dc2134b9334d3d5f138a7c347eb5e0afadf349be8d48fbac64d3e21be1c",
    "signer": "0x52C54744FeC93B156A460Db7FccF10e22b6FEdf0",
    "userId": "194963084"
  }
}